curl --request GET \
  --url https://api.sendkit.dev/contacts \
  --header 'Authorization: Bearer <token>'

{
  "data": [
    {
      "id": "550e8400-e29b-41d4-a716-446655440000",
      "email": "john@example.com",
      "first_name": "John",
      "last_name": "Doe",
      "user_id": "ext_123",
      "unsubscribed": false,
      "properties": {
        "COMPANY": "Acme",
        "PLAN": "pro"
      },
      "lists": [
        {
          "id": "550e8400-e29b-41d4-a716-446655440000",
          "name": "Newsletter",
          "created_at": "2026-03-03 10:00:00",
          "updated_at": "2026-03-03 10:00:00"
        }
      ],
      "created_at": "2026-03-03 10:00:00",
      "updated_at": "2026-03-03 10:00:00"
    }
  ],
  "links": {
    "first": "https://api.sendkit.dev/contacts?page=1",
    "last": "https://api.sendkit.dev/contacts?page=3",
    "prev": null,
    "next": "https://api.sendkit.dev/contacts?page=2"
  },
  "meta": {
    "current_page": 1,
    "from": 1,
    "last_page": 3,
    "per_page": 25,
    "to": 25,
    "total": 75,
    "path": "https://api.sendkit.dev/contacts"
  }
}